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geremd raars entrel Meunier, Tirs, or wooirsocnsr, ancre reim.

. i' estremece Specicetion of Letters atent.

Patented J une lill, 19rd.

Animaties ined marche, mi. serial malwares.

To all 'whf'om t may concern:

Be it known that l, MAURICE Tirs, a sulo.

VOlotu1ators, of which the ,following is a specification.

My invention relates to ohturators, andparticularly to an obturator for use in connection 'with a piston of an engine. lt has for an object to close the space between the walls of the piston and ,cylinder so as 'to oltain the maximum effect of the pressure in the cylinder to move the piston therein. An obturator embodying my invention is particularly adapted` i'or use in combustion engines of. eitherY the rotary oi' stationary' type. A type of rotary engine in which my present invention isA applicable is shown in, my United States Patent No, i ,01,2i}0, isA

sued ondanuary 21st, i913.

I will describe an' ohtura'tor embodying my invention and then point out the novel feature thereof, in claims.

In the accompanying drawings Figure 1 is a detail sectional View of a part of a pis# ton, a cylinder in which it moves, and an obturator carried by the pieten and embodying my invention. Fig.' 2 is a view in clevation of an obturator embodying my in venticn Fig. 3 is a detail View showing the manner of applying an obturator embodying my invention to a piston. Figs. 4 and 5 are cross-sectional views of the obturator shown in Figs. 1 to 3, inclusive, on an. enlarged scale, and taken on the lines Ll-i of Fig. 2 anil 5 5 of Fig, 3.

i Similar letters of reference designate corresponding parts in all. of the figures.

Referr/intg now more particularly to Fig.v

2, my obt ator il comprises encor more memberswhich are expanded by the pressure in the cylinder to close the space be tween the walls ofithe cylinder and piston,

thereby providing afmechanical packing he-` tween said walls, and which members, when compressed, will cause a. ring oi the /lu'brieating Huid in the cylinder to form between thesaid walls and thus provide a fluid packing between said Walls. The; specific form of obturator shown comprises two split .re-

silient metalrings a, a', which are supernnposed and are joined together to form an enlarged portion'as shown at 0:2: l'prefer to join these' two rings by imposing an end ofthe ruig c upon an end of the ringe` lWhere'upon these ends may be Weldedtogether thereby forming one continuous @ing as clearly shown in Fig. 3. l wish it underf stood, however, that the ohturator Amay be formed from one continuous piecev of metal should it be 'so"desired, thusA eliminatlng the welding' process inf the manufacture of the device.' The upper ringv alias a crosssectionl like that illustrated in Fig. 4 and comprises two flanges a3, and ai at right angles, and an odset'portion a5. The lower ring a has a cross-section like that illustraced in Figzjd and comprises two flanges a and c at right angles. The two flanges e* and a are superimposed, and the fiange a engages the o'set port-ion a5 of 'the' ring a so that 'the outer surface oi' the anges e3 and a he' in the same plane. it Will be noted also because of the peculiar disposi 'lion of the flange Li-the oiisct portion a5, and the' flange a", theta groove e is formed between the flange a3 and the end of the lian a, which groove extends around the ohinrator from one end of the enlarged portion c2 to the oppositeendv thereof.

Referring now to Fig. l, C designates a 'Y portion of a cylinder or an 4engine in which pressure 1n some form is prodnced to cause a. movement therein of a piston P. p ldesignates an annular groove' provided in the piston to receive the fla-nge ofthe obturator so that it will be held in'place'in the piston. Fig. 3 illustrates a way of applying the obturator to the piston, which is to distend it to aspiral and then thread it into the annu lar groove pf .y 4

It will noted from- Fig. l thatl the flange e3 of the .ring a is'clear of the piston so that it will be subjected by the pressure in the cylinder to cause the ring a, as Well as the ring a,through the portion a2, to eX- pand circumferentially and thereby to close the space between the piston' andthe cylinder, and thus provide a tight packing at that,

thereby'providin'gfa duid seal betweenV theV Wallsl of'v the cylinder and piston.

' Having thus described my inventiomwhat l claim vas' new'fistw;V I

' l. An obturatdr comprising a split ring l'lO having a flange and an offset portion", said flange bearing afperpendicular relation-.to said. offset portion, ,a secondsplit ring lcomlprisinga pair of flanges, one of which receives thereupon .the flange'of' the first named ring, the other flangel of' the second named. p

a. groove.

ringl being in engagement with said offset portion whereupon .the expansionof the iirst named'ring will cause an' expansion'of' lthe second named'ring. 4

2. l-An obturator comprising a pair of split rings, one of said rings comprising a pair offlanges, and an'oflset portion connecting the two flanges,l one of said flanges bearing la.

disposed flanges, one of the latter named.

Hanges receiving thereupon said perpendicu larly arranged flange, the other of' the latter named rflanges having peripheral engagement` with the offset portio 3.. An obturatorcomprisinga pairof split rings, oneofsaid rings comprising an offset portion, a flange` arranged perpendicularly ried4 by said offset portion, and a second flange carried byl the offset portion, the second named flange being arranged parallel to v said offset portion, .the otherV of saidv ringe comprising p air of flanges one of which receives thereupon 4said perpendicularly ar ranged flange, the 'other flange ofsaid pair having peripheral engagement-,With the'ofi` set portion and arranged beneath said pare' alle] lflange to forni with said parallel flange 4. An obturator ,comprising a pair of split rings, one of said rings comprising an offset portion, a flange arranged perpendicularly to said offset portion, saidflange being vcarried by said offset portion, and a second llange carried by tliebffset portion, the sec-v ond named flange being arranged parallelftoA 'said offset portion', the'otherof said ringsv comprising a pair of flanges :one of whichl receives thereuponsaid perpendicularly arfv ranged flange, the other flange of said-pair having peripheral engagement with the vof-r set portion and arranged beneathsaid parall lei flange to vform withsaid parallel flange a groove, said groove extending substantiall ythroughout'the'length ofsaiflrings. Y

In' testimony whereof I haveI hereunto signed my nam/e in the presence of the subvscri'bing Witnesses.

vto said offset portion, said flange being car-L MAURICE TIPS.

,LOUIS M. BozrNn'r, SILAs Palm, J r. 

